Comparison · NCT01873859-69a75987
On-metformin vs Off-metformin: Incidence of Lactic Acidosis
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
Cite this record
ConductScience Library. On-metformin vs Off-metformin: Incidence of Lactic Acidosis. Trial comparisons, record NCT01873859-69a75987. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT01873859-69a75987
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Measures6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note |
|---|---|---|---|---|---|
| Risk in group 1 | 0 | 0.00000000000000000347 | 0.0442 | wilson | |
| Risk in group 2 | 0 | 0 | 0.0464 | wilson | |
| Risk difference, group 1 minus group 2 | 0 | -0.0464 | 0.0442 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | log | a group has no participants with the outcome | |||
| Odds ratio, group 1 over group 2 | log | a cell of the two-by-two table is zero | |||
| Number needed to treat | from the risk difference interval | the two groups' risks are equal |
Source ClinicalTrials.gov
Groups2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | On-metformin | Diabetic patients receiving contrast media without discontinuing metformin.~Metformin: Incidence of lactic acidosis in diabetic patients receiving contrast media in the presence of metformin. | 0 | 83 | OG000 |
| Group 2 | Off-metformin | Diabetic patients receiving contrast media with discontinuation of metformin. | 0 | 79 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- PRIMARY
- Title
- Incidence of Lactic Acidosis
- Description
- Metformin-associated lactic acidosis (MALA) was defined as an arterial pH \<7.35 and plasma lactate concentration \>5 mmol ⁄ L.
- Time frame
- 48 hrs
- Population
Source ClinicalTrials.gov
Trial
- Title
- Safety of Continuing Metformin in Diabetic Patients With Normal Kidney Function Receiving Contrast Media
- NCT number
- NCT01873859
- Phases
- NA
- Conditions
- Diabetes Mellitus, Lactic Acidosis
- Interventions
- Metformin
- Lead sponsor
- Shahid Beheshti University of Medical Sciences
- Results first posted
- 2014-06-16
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT01873859?tab=results
Source ClinicalTrials.gov
Source
- Release
- trial-comparisons-2026-03-23-0.1.0
- Release manifest SHA-256
- f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
- AACT copy
- 2026-03-23
- Tables read
- outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet
Source ClinicalTrials.gov
Sources 2
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
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